Edexcel A Level Physics:复习笔记2.17 Work
Work Work is defined as The amount of energy transferred when an external force causes an object to move over a certain distance If the force is parallel to the direction of the object's dis...
Edexcel A Level Physics:复习笔记2.16 Centre of Gravity & The Principle of Moments
Centre of Gravity The centre of gravity (sometimes called the centre of mass) of an object is the point through which all the weight can be considered to act The position of the centre of gr...
Edexcel A Level Physics:复习笔记2.15 Moments
Calculating the Moment of a Force A moment is the turning effect of a force Moments occur when forces cause objects to rotate about some pivot The moment of a force is given by Moment (N m) ...
Edexcel A Level Physics:复习笔记2.14 Conservation of Linear Momentum
The Principle of Conservation of Linear Momentum The principle of conservation of momentum states that in a closed system, the total momentum before an event is equal to the total momentum after th...
Edexcel A Level Physics:复习笔记2.13 Momentum
Defining Momentum Linear momentum (p) is defined as the product of mass and velocity Momentum is the product of mass and velocity Momentum is a vector quantity - it has both a magnitu...
Edexcel A Level Physics:复习笔记2.12 Newton's Third Law of Motion
Newton's Third Law of Motion Newton’s third law of motion states: Whenever two bodies interact, the forces they exert on each other are equal in size, act in opposite directions, and are of the sam...
Edexcel A Level Physics:复习笔记2.11 Core Practical 1: Investigating the Acceleration of Freefall
Acceleration of Freefall Using Electromagnets & Light Gates Aim of the Investigations The overall aim of these investigations is to calculate the value of the acceleration due to gravity, g The...
Edexcel A Level Physics:复习笔记2.10 Mass, Weight & Gravitational Field Strength
Mass, Weight & Gravitational Field Strength Mass Mass is the measure of the amount of matter in an object Consequently, this is the property of an object that resists change in motion The great...
Edexcel A Level Physics:复习笔记2.9 Force & Acceleration
Newton's First Law of Motion Newton's First Law states: A body will remain at rest or move with constant velocity unless acted on by a resultant force The law is used to explain why things move wit...
